APA (7. basım) Alıntı

Helgeson, E. A. (1957). Methods of weed control. Food and Agriculture Organization of the United Nations.

Chicago Style (17. basım) Atıf

Helgeson, Earl A. Methods of Weed Control. Rome: Food and Agriculture Organization of the United Nations, 1957.

MLA (9th ed.) Atıf

Helgeson, Earl A. Methods of Weed Control. Food and Agriculture Organization of the United Nations, 1957.